Skip to content
Merged
Show file tree
Hide file tree
Changes from all commits
Commits
File filter

Filter by extension

Filter by extension

Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
3 changes: 2 additions & 1 deletion README.md
Original file line number Diff line number Diff line change
@@ -1,9 +1,10 @@
# cif_ed

Data names for describing electron diffraction. These are presented here as a CIF extension dictionary, but in practice many are equally applicable to X-ray or neutron studies, and so this draft, when approved by COMCIFS, might best be incorporated into the existing core CIF and possibly imgCIF dictionaries.
Data names for describing electron diffraction. These are presented here as a CIF extension dictionary, although in practice many are equally applicable to X-ray or neutron studies. This draft, when approved by COMCIFS, will be incorporated periodically into the existing core CIF and possibly imgCIF dictionaries.

This project is best seen as an opportunity to focus on the new items required in the context of electron crystallography, and to invite content review from the user community.

The first set of data definitions incorporated into the core CIF dictionary are those in **release 1.0.0** of 18 February 2025. Any definitions in cif_ed.dic with latest revision later than that date should be considered work in progress, and should not be used in production software.


This GitHub project contains:
Expand Down
76 changes: 12 additions & 64 deletions cif_ed.dic
Original file line number Diff line number Diff line change
Expand Up @@ -12,10 +12,10 @@ data_CIF_ED

_dictionary.title CIF_ED
_dictionary.class Instance
_dictionary.version 0.1.0-dev
_dictionary.version 1.0.0
_dictionary.date 2025-02-18
_dictionary.uri
https://raw.githubusercontent.com/COMCIFS/cif_ed/main/cif_ed.dic
https://raw.githubusercontent.com/COMCIFS/cif_ed/1.0.0/cif_ed.dic
_dictionary.ddl_conformance 4.2.0
_dictionary.namespace CifCore
_description.text
Expand Down Expand Up @@ -843,69 +843,17 @@ save_
;
Initial draft of new or revised (from coreCIF) data definitions
following nanED round robin project. (B. McMahon)

Updated definition of items in category REFINE_DIFF to modify
units for electron diffraction. (bm, after Lukas Palatinus)

New item _refine_ls.abs_structure_z-score introduced. (bm/Lukas)

New items _diffrn_radiation.illumination_mode,
_diffrn_measurement.tracking and *_method added; new examples for
_diffrn_source.size. (bm, after Marco Santucci)

Changed _type.source of _diffrn.precession_angle_su to 'Related'.

Removed inappropriate _enumeration.default from
_diffrn_measurement.method_precession, _diffrn_measurement.integration,
_diffrn_measurement.tracking, _diffrn_radiation.illumination_mode,
_refine.diffraction_theory

Changed name of Head category in line with evolving COMCIFS standards.

Updated the CIF_CORE dictionary import statement with the new Head
category name.
;
0.1.0-dev 2025-02-18
1.0.0 2025-02-18
;
Changed the version number to 0.1.0-dev to indicate this is a
development version. Still under discussion as to whether this will
finish as a standalone dictionary, or simply provide a development
container for new items that will go into the core (and/or imgCIF).

Changed _diffrn_measurement.tracking to
_diffrn_measurement.sample_tracking and
_diffrn_measurement.tracking_method to
_diffrn_measurement.sample_tracking_method. (bm, after Lukas Palatinus)

Added _computing.sample_tracking,
_diffrn_detector.ed_calibration_constant,
_diffrn_source.convergence_angle,
_diffrn_source.ed_probe_type. (bm, after Ashwin Suresh)

Added (based on the PDBx/mmCIF dictionary)
_exptl_crystal.mosaic_block_size, _exptl_crystal.mosaic_method,
_exptl_crystal.mosaicity and related *_su terms.

Added _refine_ls.sample_thickness and *_su,
_refine_ls.sample_shape_expression and _refine_ls.sample_shape_details.
(bm, after Ashwin and Lukas)

Added _diffrn_detector.distance_sample. (bm)

Renamed _diffrn.precession_angle to _diffrn.precession_semi_angle
(and corresponding *_su term).

Following community consultation (via Discord): renamed
_diffrn_source.ed_probe_type as
_diffrn_source.ed_diffracting_area_selection and updated
definition and enumeration list; added
_refine.diffraction_theory_details; renamed
_diffrn_measurement.integration as _diffrn_measurement.rotation_mode
and revised enumeration list.

Introduced _refine_diff.potential_max, *_min, *_RMS and associated
SU values (replacing updated REFINE_DIFF density terms) to reflect
correct practice in ED. (bm/Lukas)
Initial release version of this dictionary cif_ed.dic for electron
diffraction, developed by the NanED standards committee and with
input from the IUCr Commission on Electron Crystallography.

Added DICTIONARY_AUTHOR loop.
This dictionary is not intended to be a standalone dictionary,
but rather a platform to allow focussed development of items
specific to electron diffraction, prior to incorporation in the
core CIF or other relevant COMCIFS-managed CIF dictionaries. Some
of the definitions in this dictionary may be copies of core
definitions with extended attributes.
;
2 changes: 1 addition & 1 deletion draft_new_items.dic
Original file line number Diff line number Diff line change
Expand Up @@ -11,7 +11,7 @@ data_DRAFT_NEW_ITEMS
_dictionary.version 0.0.10
_dictionary.date 2025-02-18
_dictionary.uri
https://raw.githubusercontent.com/COMCIFS/cif_ed/main/draft_new_items.dic
https://raw.githubusercontent.com/COMCIFS/cif_ed/1.0.0/draft_new_items.dic
_dictionary.ddl_conformance 4.2.0
_dictionary.namespace CifCore
_description.text
Expand Down
Loading